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Difficulty: MediumInferences from the Text

Paleodietary reconstructions of Middle Paleolithic hominins historically relied on zooarchaeological faunal assemblages and stable isotope analyses of skeletal collagen, methods that inherently biased interpretations toward high-trophic-level terrestrial mammalian carnivory. Because plant matter leaves negligible macroscopic fossil residues and plant-derived isotopes are often masked in bulk bone collagen profiles by high meat intake, hominin reliance on flora was presumed marginal. Recent microfossil analyses of fossilized dental calculus (calcified dental plaque), however, have complicated this picture. Calculus traps intact starch granules, phytoliths, and microbotanical residues within a calcium phosphate matrix that resists environmental diagenesis. Residue analysis of Neanderthal dental calculus across multiple ecologically disparate European sites has revealed not only the consistent entrapment of cooked starchy grains and roasted underground storage organs, but also trace compounds of Salicaceae (willow bark, which contains salicylic acid) and Penicillium molds exclusively in specimens presenting severe dental abscesses and gastrointestinal infections. Consequently, the longstanding model of strict carnivorous hyper-specialization reflects methodological sampling constraints rather than empirical dietary exclusivity.

Based on the passage, which of the following inferences regarding Paleolithic hominin dietary research can be properly drawn? (Select all that apply.)

  1. Stable isotope analysis of bulk skeletal collagen is insufficient by itself to definitively rule out the routine consumption of plant materials by ancient hominins.Answer
  2. The occurrence of specific medicinal and fungal residues in Neanderthal dental calculus varied among individuals rather than being universally present across all specimens.Answer
  3. C
    The calcium phosphate matrix in fossilized dental calculus readily degrades when exposed to post-depositional subterranean environments.
  4. D
    Neanderthals maintained an organized, standardized pharmacopeia of plant remedies that was codified across all European settlements.
  5. E
    Zooarchaeological faunal assemblages fail to provide any scientifically legitimate insights into ancient hominin subsistence behaviors.

Answer

The statements indicating that bulk skeletal collagen analysis is insufficient alone to rule out plant consumption and that medicinal residues were not uniformly present across all Neanderthal specimens are both properly inferred from the text.
The correct selections are strictly grounded in the passage text: the masking of plant isotopes in collagen profiles confirms that collagen data cannot independently disprove plant ingestion, and the exclusive presence of specific compounds in afflicted individuals confirms non-uniform occurrence across the sample set.

Step-by-Step Solution

1
Evaluate the relationship between stable isotope analysis and botanical consumption.
The text notes that plant isotopes are masked in bulk collagen when meat intake is high, demonstrating that collagen analysis alone cannot disprove plant consumption.
This establishes textual support for the limitation of bulk collagen testing.
2
Evaluate the distribution of medicinal botanical traces among specimens.
The passage specifies that willow bark and mold compounds were found exclusively in individuals suffering from abscesses and infections.
Because detection was contingent on pathological conditions, these residues were not uniformly distributed across all individuals.
3
Assess the remaining choices for unjustified scope expansion or factual contradiction.
Claims regarding matrix degradation contradict the passage, claims of codified medical systems exceed the evidence, and claims dismissing all faunal data represent an extreme distortion.
Rigorous LSAT inference requires eliminating choices that rely on unwarranted leaps or direct contradictions.

Key Concept

Textual Inferences in Reading Comprehension
Estimated Time:1m 30s
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Inferences from the Text

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